EP 0370057 A4 19910925 - ELECTRIC TOASTER
Title (en)
ELECTRIC TOASTER
Publication
Application
Priority
AU PI341887 A 19870729
Abstract (en)
[origin: WO8901279A1] A control arrangement for an electric food heating device having heating elements for heating foodstuff and providing a source of light impinging on the foodstuff, the control arrangement comprising: a peaking circuit (42, 30) to determine maximum reflected light from the foodstuff and provide a first signal (V1), and measuring subsequently reflected light from the foodstuff and providing a second signal (V2), said peaking circuit including amplifier means (30) for determining the difference between the first and the second signals, and providing a third signal (V3); and a comparator means (26) for comparing the third signal (V3) and a preset signal (VB), the preset signal being proportionate to a desired heating level, the comparator means providing a terminating signal (DONE) to deactivate heating when the preset and the third signals are substantially equal.
IPC 1-7
IPC 8 full level
A47J 37/08 (2006.01); G05D 23/19 (2006.01); H05B 3/00 (2006.01)
CPC (source: EP US)
A47J 37/085 (2013.01 - EP US); G05D 23/1951 (2013.01 - EP US)
Citation (search report)
- [A] DE 2844650 A1 19800417 - SCHICKEDANZ WILLI
- See references of WO 8901279A1
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8901279 A1 19890209; BR 8807635 A 19900807; EP 0370057 A1 19900530; EP 0370057 A4 19910925; JP H03503124 A 19910718; US 5126536 A 19920630
DOCDB simple family (application)
AU 8800275 W 19880729; BR 8807635 A 19880729; EP 88907157 A 19880729; JP 50633188 A 19880729; US 45540989 A 19891228